EP3157721B1 - Truck mixer pump comprising a supporting device - Google Patents

Description

The invention relates to a truck mixer pump with a vehicle chassis and arranged on the vehicle chassis vehicle body having a body frame and arranged thereon a girder for a material distribution mast, a mixer drum with a front seen in the direction of travel and a rear drum support pedestal and a motor and transmission having drive unit for Has mixer drum.

The truck mixer pump is usually built on a chassis with more than two axes. To derive the load of the mixer drum and the mast arm in the frame of the chassis, a subframe, the so-called body frame, used on which then the various auxiliary structures such as front drum support bracket, rear drum support bracket and girder for the concrete distribution mast are placed. The mounting of the body frame on the frame of the chassis is done for example by screw or by welding. The known body frame consist of a rectangular tube or a C-profile with welded reinforcing plates. In addition, the truck mixer pump for stability during pumping operation requires a support, so they can not overturn. Usually, a supporting device is arranged in the front and rear vehicle area. So far, these support devices are independent components that are connected to the vehicle chassis and the body frame. This design means that the entire support forces must be passed through the vehicle frame and the body frame to the mast. Due to the separation between the frame and the support, this results in a relatively heavy construction of frame and connecting parts, which reduces the payload of the truck mixer pump.

Proceeding from this, the object of the present invention is to provide a truck mixer pump of the type mentioned, which allows safe support with reduced weight.

To solve this problem, the feature combination specified in claim 1 is proposed. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.

The invention is based primarily on the idea that a weight saving can be achieved if previously separate units are integrated. According to the invention, therefore, a support device integrated in the rear drum support bracket for supporting the truck mixer pump is provided on the bottom. The geometry of the support device can have different variants, for example, vertically or obliquely to the floor extendable support legs, or for broadening the support base laterally and vertically extendable support legs. In particular, the support device on both sides to the longitudinal central axis of the vehicle each have a sleeve portion and a telescoping from the sleeve portion support member as a support leg, advantageously between the sleeve sections a cross member may be arranged as a stiffening element. Furthermore, a towing lug can be arranged on the support device, since the support device has sufficient stability for towing the entire vehicle.

In a particularly advantageous development of the invention not only a support device is integrated in the rear drum support block, but the entire body frame is designed as a prefabricated unit including the mast bracket and the front and rear Trommelauflagerböcke. As a result, a further weight saving is achieved and the production of the truck mixer pump as a whole is simplified, since then no time-consuming assembly of the various individual modules is required more. A particular advantage of this design is that thereby a Paint installation is possible, in which the pre-assembled body assembly is completely painted before mounting on the vehicle chassis.

Preferably, the body frame on a extending between the mast bracket and the rear drum support bracket sheet metal bent part, which has two pointing in the direction of the vehicle chassis longitudinal beams for attachment to the vehicle chassis. The longitudinal beams of the sheet metal bent part can then be bolted to the vehicle chassis, riveted or welded. For this purpose, the longitudinal members of the sheet metal bending part can be provided in particular with a plurality of spaced at predetermined intervals, forming a hole pattern openings. These openings then allow a screw with corresponding openings in the vehicle chassis, the hole pattern allows the screw with differently shaped vehicle chassis.

In a further preferred embodiment of the invention, the body frame may also have an integrated in the mast support for supporting the truck mixer pump on the ground, so seen in the direction of travel at the front end of the body frame support means. This also leads to a weight saving and improved stability of the support.

The sludge pump of the truck mixer pump is expediently arranged in the rear region of the vehicle chassis and can be designed as a rotor pump or piston pump with longitudinally or transversely to the vehicle longitudinal axis aligned delivery cylinders. As far as the sludge pump is designed as a piston pump with aligned longitudinally to the vehicle longitudinal feed cylinders, the rear drum support bracket may have in an advantageous embodiment of the invention, a passage opening for the delivery cylinder of the pump.

In an advantageous embodiment of the invention, the body frame of a plurality of welded together and / or screwed sheets, sheet metal bent parts and / or metal profile parts is formed. In this way, a comparatively complex shape of the body frame can be made with a minimum number of items.

In order to use the body frame with vehicle chassis of different lengths, the invention is provided in an advantageous embodiment, that the body frame has a arranged between the mast bracket and the front Trommelauflagerbock separation point. The formed for receiving a frame extension causing intermediate piece of predetermined length. Alternatively, the separation point can also be designed as a telescopic, fixable at predetermined intervals frame part.

In order to facilitate easy cleaning of the truck mixer pump after a construction site application, a pressurized water tank is provided regularly, which has a substantially barrel-shaped form. This water tank can be mounted to save space on the body frame when the girder of the body frame has a recess for receiving the water tank, which encloses this in whole or in part. Advantageously, the water tank is seen in the direction of travel arranged in the rear of the mast block and formed the recess to open its receptacle.

Fig. 1

eine perspektivische Ansicht einer Fahrmischerpumpe mit einem Aufbaurahmen, in den die Trommelauflagerböcke, der Mastbock, sowie die vordere und die hintere Abstützeinrichtung integriert sind;

Fig. 2

eine perspektivische Ansicht des Aufbaurahmens;

Fig. 3

der Aufbaurahmen gemäß Fig. 2 mit einer daran montierten Dickstoffpumpe;

Fig. 4a bis f

perspektivische Ansichten eines Ausführungsbeispiels des Aufbaurahmens, bei dem eine Trennstelle vorgesehen ist und eine Rahmenverlängerung durch Einsetzen von Zwischenstücken an der Trennstelle möglich ist;

Fig. 5a und b

perspektivische Ansichten eines Ausführungsbeispiels des Aufbaurahmens, bei dem eine teleskopierbare Trennstelle zur Ermöglichung einer Rahmenverlängerung vorgesehen ist;

Fig. 6

eine perspektivische Ansicht des Heckbereichs einer Fahrmischerpumpe mit einer in den hinteren Trommelauflagerbock integrierten Abstützeinrichtung;

Fig. 7 bis 9

drei Ansichten des Hecks einer Fahrmischerpumpe mit Varianten einer in den hinteren Trommelauflagerbock integrierten Abstützeinrichtung.

In addition to and in addition to the above, it should be noted that prior art truck mixers have as separate discrete components a mast block, a front drum support pedestal and a rear drum support pedestal. These three components are screwed onto a body frame arranged on the chassis or welded thereto. The rear support is again attached separately to the vehicle chassis. Since these are individual components, there are between each component and another a separation point. Each separation point requires additional weight and installation costs. The flow of force between the components is also hindered by any separation, which in each case must be made more massive than desirable for reasons of weight. By contrast, in the present integral frame, all of the above components are combined into an inseparably interconnected steel assembly. The rear support is no longer attached to the vehicle frame or chassis, but is also integrated into the integral frame. By eliminating the separation points of the power flow and weight can be optimized. All components are independent of the vehicle chassis, including those of different manufacturers, and the vehicle chassis itself does not have to transmit any support force between the front and the rear support, it hangs like a ballast under the integral frame. The integral frame can be optimized as a welded construction to the effect that reduces the tendency to twist over the connection with the vehicle chassis and a better off-road capability of the vehicle is achieved. In previously known truck mixers, it has been observed that the vehicle is so tight on construction sites that collisions occur between the arm package (articulated mast) for the concrete delivery line and the mixer drum. If the torsional tendency of the vehicle chassis is reduced, possibly still occurring, very small torsions of the chassis also not detrimental effect on the integral frame, so that, for example, in the DE 10 2010 051 111 A1 described, elastically positive separation point can be avoided. The present integral frame geometrically forms a cross structure with regard to the force flow, with the four bottom contact points each at the end of a cross arm. As far as the possibility of length adjustment of the integral frame is mentioned above, it is understood that the spacers and / or fittings continue to ensure the supporting function of the frame and not just an adaptation of other anmontierter assemblies, such as a concrete pump, owed. DE 10 2008 005 009 A1 discloses a truck mixer pump according to the preamble of claim 1. In the following the invention with reference to the embodiments schematically illustrated in the drawings will be explained in more detail. Show it

Fig. 1

a perspective view of a truck mixer pump with a body frame in which the drum support blocks, the mast block, and the front and rear support means are integrated;

Fig. 2

a perspective view of the body frame;

Fig. 3

the body frame according to Fig. 2 with a thick matter pump mounted thereon;

Fig. 4a to f

perspective views of an embodiment of the body frame, in which a separation point is provided and a frame extension is possible by inserting spacers at the separation point;

Fig. 5a and b

perspective views of an embodiment of the mounting frame, in which a telescopic separation point is provided to enable a frame extension;

Fig. 6

a perspective view of the rear portion of a truck mixer pump with an integrated in the rear drum support bracket support means;

Fig. 7 to 9

three views of the rear of a truck mixer pump with variants of an integrated in the rear drum support bracket support.

In the Fig. 1 Truck mixer 10 shown essentially consists of a vehicle 12 with a chassis 14, a frame 16 disposed on the chassis 14 with front and rear Trommelauflagerböcken 18, 20 and a mast block 22, a mixer drum 24 and a concrete placing boom 26, front and rear support means 28, 30, as well as other necessary for the operation of the truck mixer pump components.

Fig. 2 shows a perspective view of a first embodiment of the body frame 16. The body frame 16 has a in the vehicle longitudinal direction between the mast bracket 22 and the rear Trommelauflagerbock 20 extending middle part 32 which is formed for example as a sheet metal bent part and the two longitudinal members 34, 36, which Represent links to the vehicle chassis 14. For this purpose, the longitudinal members 34, 36 on a plurality of perforations 38 forming a hole pattern. The openings 38 are brought in the assembly of the mounting frame 16 on the vehicle chassis 14 with corresponding openings in the vehicle chassis 14 to cover and thus allow a screw connection of the two components together. Depending on the design of the vehicle chassis, for example with regard to its length, different subgroups of openings 38 are used. The middle part 32 is designed substantially as a downwardly open box section, wherein the longitudinal bars 34, 36 are connected to each other by a plurality of connecting pieces or transverse webs. The middle part 32 may also be formed predominantly as a one-piece bent sheet metal part. In the front region of the mounting frame 16 of the mast block 22 is arranged for the concrete boom and welded to the middle part or screwed. The mast block 22 is like the middle part 32 composed of a plurality of sheets. In the lower region of the mast block 22, the support device 28 is integrated. The front support device 28 has extendable, possibly also telescopic, support legs 40 and from these telescopically extending to the bottom support legs 42. The mast goat 22 has a rearwardly facing, open-edged recess 44, the space between the mast block 22 and the mixer drum 24 and the front drum bearing for the arrangement of a water tank 45 (Fig. Fig.1 ) creates.

At the rear end of the mounting frame 16 of the Trommelauflagerbock 20 is arranged. The drum support bracket 20 supports the rear drum bearing 46. Further, the rear support device 30 is disposed on the rear drum support block 20.

Fig. 3 shows the body frame 16 according to Fig. 2 , wherein here in the rear region of the frame a slurry pump 48 is arranged with a material feed container 50. The pump 48 is designed as a piston pump and has two delivery pistons 52, 54, which extend in the longitudinal direction between the side rails 34, 36 of the central part 32 of the mounting frame 16.

Fig. 4 is a simplified representation of an embodiment of the mounting frame 16 with a separation point 56 which is arranged in the rear region of the front Trommelauflagerbocks 18. Fig. 4a shows the shortest variant of this embodiment in the assembled state. Fig. 4b shows the separation point in the open state. At the front Trommelauflagerbock 18 a C-profile 58 is attached, for. B. welded. The C-profile has two lateral legs 60, 62, each with a plurality of apertures 64. The middle part 32 of the mounting frame 16 has in the region of the separation point 56 a corresponding number of openings, so that the two parts can be connected to each other with bolts 57.

Fig. 4c and 4d show the body frame 16 with a first, inserted into the separation point 56 extension piece 66. The extension piece 66 is formed substantially as a box profile and has on the one hand openings for attachment to the C-profile 58 and on the other side tabs for attachment to the front end of the central part 32 of the mounting frame 16. The Fig. 4e and 4f correspond to the Fig. 4c and 4d , except that here a longer extension piece 66 'is inserted into the separation point 56. The extension pieces 66, 66 'and optionally further are designed so that a frame extension in a certain grid, for example 10 cm, 20 cm, etc. is made possible. The corresponding components can then be stored to adapt the body frame to different vehicle chassis.

The Fig. 5a and 5b show an embodiment of the body frame with separation point 56 ', in which the frame extension is not achieved if required by the use of spacers, but in that the separation point 56' is formed telescopically. For this purpose, upper and lower connecting struts 68, 68 ', 70, 70' are arranged on both sides of the end face of the central part 32 of the mounting frame 16. The mast bracket 22 has a recess open towards the rear, in which the connecting struts 68, 68 ', 70, 70' are received longitudinally displaceable and in turn can be fastened with a plurality of bolts in the desired length position.

Both variants of the separation point 56, 56 'are dimensioned and designed in such a way that the carrying capacity and torsional rigidity of the mounting frame 16 are not impaired thereby.

Fig. 6 11 shows a perspective view of the rear region of a truck mixer pump 10 with a support device 30 integrated in the rear drum support stand 20. The support device 30 basically consists of a frame part, which is arranged by a transverse bar 72 and two sleeve parts 74, 74 extending obliquely in the bottom direction ', which are connected in the region of their bottom end by a cross strut 76 with each other. In the trained as a square tube sleeve sections 74, 74 'is in each case designed as a support foot supporting element 78, 78 'slidably disposed in Fig. 6 in a retracted transport position and for example in Fig. 2 in an extended support position. The crossbar 72 forms here simultaneously the rear cross member of the vehicle chassis 14, which would otherwise interfere with the installation position of the delivery piston 52, 54. Furthermore, a towing eye 80 is arranged on the transverse strut 76 of the support means 30, which is more accessible than in an arrangement on the vehicle chassis 14. Due to the rigid composite of the support 30 and the rear drum support 20 and the integrated body frame 16 is the required load capacity guaranteed.

The Fig. 7 to 9 show a detail of a rear view of the truck mixer pump 10 with three variants of the integrated in the rear drum support bracket 20 supporting device, wherein the in Fig. 7 shown supporting device 30 of in Fig. 6 represented corresponds. In the Fig. 8 illustrated support means 30 'is the in Fig. 7 shown functionally comparable, with the difference that the sleeve sections 74, 74 'here perpendicular and not obliquely in the direction of the ground. In the Fig. 9 For this purpose, displaceable telescopic elements 82, 82 'are comparable to the front support legs 40 (see FIG. Fig. 2 ) are arranged, at the outer ends of the sleeve portions 74, 74 'are arranged with the extendable perpendicular to the ground support members 78, 78'. A cross bracing between the sleeve parts is not possible here by nature, which is compensated by a correspondingly more resilient design of the crossbar 72 and the telescopic members 82, 82 '. At the telescopic organs 82, 82 'are further in the region of the outer ends warning or position lights 84, 84' are arranged, which are protected there from damage but are clearly visible. The lights can also be arranged on the inside and radiate through openings in several directions, for example to the front, side and back. In summary, the following should be noted: The invention relates to a truck mixer pump 10 with a vehicle chassis 14 and arranged on the vehicle chassis vehicle body having a body frame 16 and arranged thereon a mast bracket 22 for a material distribution mast 26, a mixer drum 24 with a front seen in the direction of travel and a rear Drum support bracket 18, 20 and a motor and a transmission having drive unit for the mixer drum 24 has. In order to enable safe support with reduced weight, according to the invention, a support means 30 integrated in the rear drum support block 20 for supporting the truck mixer pump 10 on the ground is proposed.

LIST OF REFERENCE NUMBERS

10

Truck mixer pump

12

vehicle

14

chassis

16

mounting frame

18.20

Trommelauflagerböcke

22

boom base

24

mixer drum

26

Concrete placing boom

28, 30, 30 ', 30 "

support devices

32

midsection

34, 36

longerons

38

perforation

40

outrigger

42

Support foot

44

recess

45

water tank

46

drum bearing

48

Slurry pump

50

Material feed container

52, 54

delivery piston

56

separation point

57

bolts

58

C-section

60.62

leg

64

perforation

66, 66 '

extension

68, 68 ', 70, 70'

connecting struts

72

crossbeam

74.74 '

sleeve part

76

crossmember

78, 78 '

supporting

80

towing

82, 82 '

telescopic member

84, 84 '

position light

Claims (15)

1. Truck mixer pump (10) comprising a vehicle chassis (14) and a vehicle body that is arranged on the vehicle chassis and comprises a body frame (16) and arranged thereon a boom block (22) for a material distributing boom (26), a mixer drum (24) comprising drum bearing blocks (18, 20) that are at the front and at the rear, respectively, when viewed in the direction of travel, and a drive unit for the mixer drum (24) that comprises a motor and a gear, characterized by a support apparatus (30) that is intended for supporting the truck mixer pump (10) on the ground and is integrated in the rear drum bearing block (20).
2. Truck mixer pump according to claim 1, characterized in that the support apparatus (30) comprises on either side of the longitudinal axis of the vehicle (12) a sleeve part (74, 74') and a support element (78, 78') that can extend from the sleeve part telescopically.
3. Truck mixer pump according to claim 2, characterized in that a crossmember (76) acting as a bracing element is arranged between the sleeve parts (74, 74').
4. Truck mixer pump according to either claim 2 or claim 3, characterized in that the sleeve parts (74, 74') are arranged so as to point perpendicularly or diagonally outward towards the ground in relation to the central longitudinal axis of the vehicle (12).
5. Truck mixer pump according to claim 2, characterized in that the sleeve parts (74, 74') are arranged on telescopic members (82, 82') that can extend laterally from the support apparatus (30") in opposite directions.
6. Truck mixer pump according to any of claims 2 to 5, characterized in that the support elements (78, 78') and/or the telescopic members (82, 82') can be moved by means of hydraulic cylinders between a retracted transport position and an extended support position.
7. Truck mixer pump according to any of claims 1 to 6, characterized in that the body frame (16) comprises a support apparatus (28) that is intended for supporting the truck mixer pump (10) on the ground and is integrated in the boom block (22).
8. Truck mixer pump according to any of claims 1 to 7, characterized in that a thick matter pump (48) designed as a rotor pump or piston pump having delivery cylinders (52, 54) oriented longitudinally or transversely to the vehicle longitudinal axis is arranged in the tail region of the vehicle chassis (14).
9. Truck mixer pump according to claim 8, characterized in that the rear drum bearing block (20) comprises a through-opening for the delivery cylinder (52, 54) of the thick matter pump (48) designed as a piston pump.
10. Truck mixer pump according to any of claims 1 to 9, characterized in that the body frame (16) is formed of a plurality of metal sheets, bent sheet metal parts and/or metal profile parts that are welded and/or screwed together.
11. Truck mixer pump according to any of claims 1 to 10, characterized in that the body frame (16) comprises a separating portion (56) arranged between the boom block (22) and the front drum bearing block (18).
12. Truck mixer pump according to claim 11, characterized in that the separating portion (56) is designed to receive an intermediate piece (66, 66') of a predetermined length that causes the frame to extend.
13. Truck mixer pump according to claim 11, characterized in that the separating portion (56) is designed as a telescopic frame part that can be fastened at predetermined intervals.
14. Truck mixer pump according to any of claims 1 to 13, characterized in that the boom block (22) comprises a recess (44) for receiving a water tank (45), which recess surrounds said water tank completely or partially.
15. Truck mixer pump according to claim 14, characterized in that the recess (44) for receiving the water tank (45) is open at the edge towards the vehicle tail.

Images